# Relationship history for MSHA mine 5001646

Current hierarchy: **Loren C  Browne; Neil A  Browne Jr → Pitman Sand & Gravel → Pitman Sand & Gravel**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Pitman Sand & Gravel → Pitman Sand & Gravel; 1999-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Loren C  Browne et al → Pitman Sand & Gravel; 1999-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Loren C  Browne et al → Pitman Sand & Gravel; 1999-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neil A  Browne Jr et al → Pitman Sand & Gravel; 1999-06-01 to current/open; source msha-controller-operator-history